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Vulnerabilities in NoCMS
From: "MustLive" <mustlive () websecurity com ua>
Date: Wed, 31 Mar 2010 19:09:51 +0300

Hello Full-Disclosure!

I want to warn you about security vulnerabilities in NoCMS (in both versions
for work with Ascent and Mangos).

Advisory: Vulnerabilities in NoCMS
URL: http://websecurity.com.ua/4065/
17.03.2010 - found vulnerabilities.
24.03.2010 - disclosed at my site.
25.03.2010 - informed developers.

These are Insufficient Anti-automation and Denial of Service

The vulnerabilities exist in captcha script CaptchaSecurityImages.php, which
is using in this system. I already reported about vulnerabilities in
CaptchaSecurityImages (http://websecurity.com.ua/4043/).

Insufficient Anti-automation:


Captcha bypass is possible as via half-automated or automated (with using of
OCR) methods, which were mentioned before (http://websecurity.com.ua/4043/),
as with using of session reusing with constant captcha bypass method
(http://websecurity.com.ua/1551/), which was described in project Month of
Bugs in Captchas.



With setting of large values of width and height it's possible to create
large load at the server.

Vulnerable are all versions of NoCMS.

Best wishes & regards,
Administrator of Websecurity web site

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